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Bemix High Tech 310

Information

Bemix High Tech 310 is a pumpable, thixotropic, certified grout with expansion. Mainly used for jointing where a joint with good seal and high strength is required and for anchoring steel in vertical surfaces. Bemix High Tech 310 is easy to apply by hand or with suitable pumping equipment. Used for jointing of concrete elements and natural stone where a joint with good seal and high adhesion is required. For installing bolts and steel in both horizontal and vertical holes. Also suitable for smaller castings with high requirements and filing jobs where formwork cannot be used; the colour is adapted to constructions cast from construction cement.

Product data

Article number

1100420

Weight

25 kg

Product category

Expanding mortar

Function

Jointing, Anchoring

Processable minutes

20

Compression strength

70

Layer thickness jointing in mm

Unreinforced 5-40

Layer thickness other appliacations in mm

Unreinforced 5-20

Consumption kg/m2/mm

2

Water quantity liter/25 kg

3,75

1 kg dry mortar= finished Concrete in litres

0,5

Waterproof

Yes

Instructions

Preparation:
Clean the substrate carefully and if possible pre-water 24 hours before casting. Remove surface water immediately before casting.

Mixing:
Do not mix by hand. The best mixer is a rapid mixer type Rojo 50, automatic mixer or pan mixer. For smaller quantities, mixing with a drill and mixer attachment works well. Mix to an even and clump-free consistency. Always pour in the water first. Use a graduated mixing vessel and ensure that the temperature of the mix is 20 °C. The mixed concrete must be used within 20 minutes.

Jointing:
The mix is pumped into the joints with a Bemix concrete pump. Smaller quantities can be applied manually into the joint with a Bemix concrete injector. For jointing in sub-zero temperatures use Bemix High Tech 310 FF.

Reinforcement:
Joints over 20 mm layer thickness need to be reinforced with the prescribed covering layer.

After treatment:
Concrete that needs to be removed is scraped off with a finishing trowel once it has hardened sufficiently. Visible surfaces in the joint are shaped to the required appearance.

After curing:
When after treatment is done protect free surfaces from drying out. Apply a water mist and protect with plastic sheeting. Keep damp for the whole first week.

Anchorage:
With repairs the work should be performed according to EN 1504-10.

Preparation:
Drilling is done at an angle to the surface, including for vertical surfaces. The drill hole should be the diameter of the item to be embedded plus 10 mm. When a hole has been drilled, it is cleaned out with compressed air and finally carefully plugged before the next hole is drilled. The drill hole is filled with water at least 24 hours before installation. Clean out the hole with compressed air immediately before installation. There must be no free water in the hole before installation. After the hole has been blown clean, installation must be done immediately. The bolt to be embedded must be free of loose rust, oil, grease or other contaminants.

Installation:
The concrete is injected into the drill hole with a Bemix concrete pump or manually with a Bemix concrete injector. For installation in sub-zero temperatures use Bemix High Tech 310 FF. The bolt is then pushed carefully down into the hole with a backwards and forwards motion so that air bubbles are pressed out of the concrete. The entire hole must be full of concrete after the bolt has been installed. The bolt is held in place for support. The support must not be allowed to get stuck.

After curing:
When after treatment is done protect free surfaces from drying out. Apply a water mist and protect with plastic sheeting. Keep damp for the whole first week. The support can be dismantled the day after casting.